Research Geologist
Email:
kschmidt@usgs.gov
Office Phone:
650-439-2302
Fax:
650-329-4936
ORCID:
0000-0003-2365-8035
Location
345 Middlefield Road
Mail Stop 973
Menlo Park
, CA
94025
US
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This data release supports interpretations of field-observed root distributions within a shallow landslide headscarp (CB1) located below Mettman Ridge within the Oregon Coast Range, approximately 15 km northeast of Coos Bay, Oregon, USA. (Schmidt_2021_CB1_topo_far.png and Schmidt_2021_CB1_topo_close.png). Root species, diameter (greater than or equal to 1 mm), general orientation relative to the slide scarp, and depth below ground surface were characterized immediately following landsliding in response to large-magnitude precipitation in November 1996 which triggered thousands of landslides within the area (Montgomery and others, 2009). The enclosed data includes: (1) tests of root-thread failure as a function of...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Botany,
Forestry,
Geomorphology,
Oregon,
Soil Sciences, All tags...
Southern Oregon Coastal,
USGS Science Data Catalog (SDC),
United States,
biota,
environment,
geoscientificInformation,
landslide,
landslide susceptibility assessment,
plant,
root, Fewer tags
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Field data used to support numerical simulations of variably-saturated flow focused on variability in soil-water retention properties for the U.S. Geological Survey Bay Area Landslide Type (BALT) Site #1 in the East Bay region of California, USA
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: BALT-1,
California,
East Bay region,
GHSC,
Geologic Hazards Science Center, All tags...
LHP,
Landslide Hazards Program,
USGS,
USGS Science Data Catalog (SDC),
United States,
earth science,
hydraulic conductivity,
landslide hazard,
numerical simulations of variably-saturated flow,
permeameter,
pore-water pressure,
rainfall,
soil-moisture,
soil-suction,
soil-water retention, Fewer tags
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This data release contains principal facts of gravity measurements collected by the U.S. Geological Survey in 2020-2022, a compilation of existing and new density and magnetic susceptibility data, and gridded magnetic and magnetic potential data of the Bartlett Springs Fault Zone and surrounding areas, northern California. These data support modeling of gravity and magnetic anomalies to characterize serpentinite bodies along the Bartlett Springs Fault zone as a proxy for fault creep and understand structure along the Coast Range-Sacramento Valley interface.
Categories: Data;
Tags: California Coast Range,
Geophysics,
Lake Berryessa,
Lake Pillsbury,
Round Valley, All tags...
Sacramento Valley,
USGS Science Data Catalog (SDC),
geoscientificInformation,
gravity measurement,
magnetic field,
magnetic potential field,
rock density,
rock magnetic susceptibility, Fewer tags
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This data release presents point data associated with the geologic and geophysical maps of the Sierra Nevada Digital Earth Science Atlas led by the California Geological Survey and U.S. Geological Survey. Data include principal fact information for new gravity measurements collected by the U.S. Geological Survey from 2012 to 2023 and for existing gravity measurements compiled from 21 sources. Nearly 29,000 gravity measurements were processed to complete Bouguer and isostatic gravity anomalies to provide information on crustal structure, such as depth extent of plutons and arc terranes, and geometry of Cenozoic basins developed along the margins of the Sierra Nevada. Density and magnetic property measurements were...
Categories: Data;
Tags: Eldorado National Forest,
Lake Almanor,
Lake Isabella,
Lake Tahoe,
Mono Lake, All tags...
Plumas National Forest,
Sequoia National Park,
Sierra National Forest,
Sierra Nevada,
Stanislaus National Forest,
Tahoe National Forest,
Tehachapi Mountains,
USGS Science Data Catalog (SDC),
Yosemite National Park,
density measurement,
geoscientificInformation,
gravity measurement,
natural remanent magnetization,
none,
rock magnetic susceptibility, Fewer tags
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This data release includes information used to support interpretations of relations between precipitation and soil moisture for a U.S. Geological Survey post-fire monitoring array installed near Malibu, CA following the 2007 Canyon fire. The 3 datasets are: 1) a time series of precipitation from three tipping bucket rain gages in individual files (Schmidt_2020_CANVQRG1.csv, Schmidt_2020_CANVQRG2.csv, and Schmidt_2020_CANTPRG3.csv; where RG in file name is abbreviation for rain gage), 2) a time series of a total of 9 soil moisture probes distributed with three soil moisture probes installed at varying depths from 3 individual soil pits in 3 individual files grouped by pit (Schmidt_2020_CANVQSM1.csv, Schmidt_2020_CANVQSM2.csv,...
Categories: Data;
Tags: California,
California,
Climatology,
Ecology,
Environmental Health, All tags...
GMEG,
Geology, Minerals, Energy, and Geophysics Science Center,
Geomorphology,
Hydrology,
LHP,
Landslide Hazards Program,
Malibu Beach,
Soil Sciences,
USGS,
USGS Science Data Catalog (SDC),
United States,
United States,
biota,
earth sciences,
field inventory and monitoring,
hazard mitigation,
hazard preparedness,
landslide hazards,
landslides,
precipitation (atmospheric),
soil moisture,
time series datasets, Fewer tags
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